The Cincinnati Enquirer reports the Fairfield Board of Education voted 4-0 yesterday to fire Gil Voigt.
Voigt didn't immediately return a call for comment today but has said the student misquoted him.
Voigt, who is white, says what he actually told the teen was that he doesn't think the nation can afford another president like Barack Obama, "whether he's black or white."
A state referee investigating Voigt found that explanation wasn't credible.
Voigt may appeal his firing to a court.
He had been on unpaid leave since December following a parent's complaint about the Obama remark.